Posted by Paul A Brierley at 21:49 on 2012 Feb 29
Hi Tony,I have the book on order with the shop. Hopefully this will arrive later this week.I will add BY to my list together with. A EOS Astronomik CLS and HA clip filter and 50mm lens. At a later date.I’d like to use the lens with one of these filters for piggy back widefield imageing.